---
id: "integer-addition"
keywords: ["plus", "add", "addition", "sum", "int", "integer"]
name: "+"
summary: "This is the `integer addition` operator."
category: "operators"
---

This operator performs _integers_ addition.

<CodeTab labels={["ReScript", "JS Output"]}>

```res
let result = 1 + 2
```

```js
val result = 3;
```

</CodeTab>

For contatenating _strings_ see the [`++`](./operators_string_concatenation.mdx) operator.
